Oven-wall construction



J. A. MILLER.

OVEN WALL CONSTRUCTION.

APPLICATION men Aus.23, 1919.

1,393,954, Patented om.. 1s, 1921.

. f fw u a' 10 11 e le 1o UNITED STATES a PATENTl OFFICE.

JOHN A. MILLER, OF TARRYTOWN, NEW YORK.

Patented Oct. 18, 1921.

Application led August 23, 1919. Serial No. 319,511. 'l

OVEN-WALL CONSTRUCTION.

1,393,954, Specification of Letters Patent.

To all whom it mary com/cem.'

Be it known that I, JOHN A. MILLER, a citizen of the United States, and resident of Tarrytown, Westchester county, State of New York, have invented certain new and useful Improvements in Oven-Wall Construction, of which the following is a specification.

My invention relates to oven construction, and particularly to the construction of the side and top walls of ovens such, for example, as are used` in japanning and analogousprocesses; and the object thereof is to provide a wall construction in which the conduction of heat from `the interior of the oven to the exterior atmosphere will be reduced to a minimum.

A further object of my invention is to' provide an improved oven wall construction comprising two separate walls spaced apart from one another, but secured together at intervals throughout their area, to thereby provide a unitary wall structure having an internal air space.

A further object of my invention is to iprovide an improved wall construction whereby an oven may be easily built up at the place where the same is to be used from standard sections, and from standard engineering or building material; to thereby provide for the construction and installation of an oven of the proper size for use by the purchaser or user thereof and to meet his re uirements in each particular case.

further object of m invention is to provide an improved roo construction for ovens of the type referred to, whereby a roof of sufficient strength for the service required of the oven may be more readily and cheaply rovided than has heretofore commonly een the case.

A further object of my invention is to provide an improved oven wall construction in which there is no metallic path of appreciable area leading from the interior of the oven toward the exterior thereof, and alon which a flow of heatmay occur.

With the above and other objects of invention in view, my invention consists in the improved oven wall construction hereinafter described at length and shown in the drawing accompanying and forming a part of this specification; it being appreciated, however, that the embodiment of my invention illustrated in the drawing is one only of several forms in which the same may be embodied, and that my invention includes all such variations and notifications of the particular embodiment thereof illustrated as come within the scope of the concluding claims. In the drawing:

Figure l is a view of an oven made in accordance with my invention in front elevation, the wall thereof being broken away in art to show the construction thereof.

ig. 2 is a view showing a section upon a horizontal plane indicated by the line II-II, Fig. l.

Fig. 3 is a view showing a section taken upon a vertically extending lane, the same as in Fig. l, but showing tlife wall upon a larger scale.

Fig. 4 isa view showing a section of the wall upon a plane corresponding with the plane of Fig. 2, but in which the filling material dis thicker than in Fig. 2.

Fig. 5 is a view showing a section upon a lane indicated by the line V-V, Fig. 1.

ig. 6 is a view showing one form of metallic lathing capable of use in forming an oven wall in accordance with my invention.

Referring now to the drawing, the side wall 7 of the oven shown in said figure is made up of a plurality of panels 8, each made from sheet metal and the meeting or side edges of which are turned inward and secured together, preferably through double seam joints, as shown in 9, whereby inwardly extending ribs are provided between i the meeting edges of each two abutting panels. The joint thus provided -is preferably covered by sheets of asbestos or similar heat non-conducting material, as indicated by the reference numeral l0, although these strips of protecting material may be omitted if deemed necessary or desirable.

The spaces within the channels of the panels and between the ribs 9 are filled by masses of molded or plastic heat non-conducting materiah, such, for example, as molded magnesia or similar blocks or bricks, said blocks or plastic material being indicated by the reference numeral 11.

After the panels above described havel been put in place at the place where the oven is to be built and the same secured together along their meeting edges, and after the channels between the ribs have been the lathing hold the llingy or molded nonconducting material 11 in place within the channels within which it is located, the extremities'ofthe high ribs being in ContactV with the non-conducting material along a plurality of lines, 'as will be lappreciated. The metallic lathlng is preferably secured to the anels'and held in place by means of wire tie members 14 extending through holes provided adjacent the inner edges of the ribs 9, and through holes in the lathing, the ends of the wire being twisted together as shown in Figs. 2 and 3 of the drawing.

The metallic lathing will ordinarily be of the perforated or expanded metal type, althou h an unperforated sheet having a roug ened surface for holding 'the plastic material which is applied thereto in place may be used if desired. After said lathing is 1n place .and secured to the panels one or more layers of plastic heat non-conduct ing material, indicated by 'the numerals 15-15, are applied to the lathing in the ordinary manner in which plaster is applied to lathing in ordinary building construction operations, as indicated in the cross-sec-l tional views, it being understood that the number of coats thus applied one upon the other and supported by the lathing is immaterial;

The side walls of the oven are preferably.

strengthened by means of angular cleats 16 secured to the inner surface thereof by rivets before the blocks of molded filling material 8 are placed within-the channels of the panels, or before the said channels are lled with the plastic or molded material if theC said material is applied to the panels after they'have beenerected to provide. the inner portion of the wall of the oven; and the thickness ofthe said filling material maybe such that the extremities of the high ribs of thelathing contact with the extremities ofthe ribs at the sides of the panels,

as shown in Figs'. 1, 2 and 3, or the filling material may be thicker, as shown at 17 in Fig. 4, in which case there. is no Contact between the extremities of the high ribs of the metallic lathing and of the ribs' at the s1desv pf the panels; thus providing a lconstructlon, in which the only metallic path between the interior of the oven` and the exterior thereof is the extremely limited path provided by the wires 14 whereby the athing 1s secured to the panels.

The ovenwill ordinarily be provided with suitable supports or ides, as shown at 18, Fig. 1,' for supportlng the articles to be heated or along which a suitable conveyer The roof of my improved oven is preferably `constructed in the same manner as the side wall thereof. lt is, however, ordinarily desirable to'strengthen the roof, because of its considerable area, and, as shown in Figs. 1 and 5, girders 19 extending between the side walls of the oven and the ends of which rest upon angle iron brackets 20 are ordi# narily provided for affording additional support to the roof. One such strengthening girder or reinforcing plate is preferably placed between each twoadjacent panels, as indicated in the cross-sectional view, Fig. 5, the girder or plate bein held in place by rivets extending throng the overlapping side edges of the panels yand through the upper edge of the plate as shown. This invention, l claim and desire to secure by Letters Patent:

1. An oven wall comprising a plurality o panels of channel form made from sheet metal and the lmeeting edges ci which are turned inward and secured together 'to thereby provide ribs extending from the plane of the panels; a lling of heat noncopducting material located within the channels of said panels and between the ribs formed. bythe joints between abutting panels; .a sheet of metallic lathing having inwardly extending or high ribs arran ed at right angles to the ribs of said channe s and the extremities of which contact with said filling material to thereby hold the same in place; means for securing said metallic lathing to said panels; and a layer of plastic heat non-conducting material upon and carried by said metallic lathing.

2. An oven wall comprising a plurality of panels of channel form made from sheet metal and the meeting edges of which are turned inward and secured together to thereby provide ribs extending from the plane of the panels; a filling of molded heat non-conductin material located within the channels of sald panels and between the ribs formed by the joints between abutting panels; a sheet of metallic lathing having inwardly extending or high ribs arran d at right angles to the ribs of said channe s and the extremities of which contact with said molded filling material to thereby hold Said material in. place; tie members extending between the ribs of said panels and said me tallic lathing to thereby hold said lathing and panels together; and a layer of plastic heat non-conducting material upon and carried by said metallic lathing.

An oven wall construction comprising a plurality of panels of channel form made :from sheet metal and the meeting edges of which are turned Ainward and secured to-l gether to thereby provide ribs extending from the plane of theV panel; a strengthening girder or plate secured in place between the meeting edges of said panels; a lling of heat non-conducting material located within the channels of said panels and be tween the ribs formed by the joints between abutting panels; a sheet of metallic lathing having inwardly extending or high ribs arranged at right angles to the ribs of said channels and the extremitiesl of which contact with said lling material to thereby hold the same in place; and a layer of plastic heat non-conducting material upon and carried by said metallic lathing.

4. An oven wall comprising a pluralit of panels of channel form made from s eet metal; a plurality of ribs extending inwardly from the plane of said channels; a filling of heat non-conducting material located within `the channels of said panels and between the ribs aforesaid; a sheet of metallic lathing having inwardly extending or high ribs arranged at right angles to the ribs of said channels to thereby provide internal air spaces, and the extremities of which high ribs contact with said filling material to thereby hold the same in place; and a layer of plastic heat non-conducting material upon and carried by said metallic lathing.

5. An oven wall comprising an inner portion made from sheet metal and having a plurality of ribs extending outwardly from the interior of the oven and into the wall; a filling of hea-t non-conducting material located within the spaces between said ribs; a sheet of metallic lathing having inwardly extending or high ribs arranged at right angles to the outwardly extending ribs above referred to, to thereby provide internal air spaces, and the extremities of which high ribs contact with said filling material to thereby hold same in place; and a layer of plastic heat non-conducting material upon and carried by said metallic lathing.

In testimony whereof I aflix my signature.

J NO. A. MILLER. 

